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Don't jitter if frame height differes by less than 3 lines.

This commit is contained in:
Christian Speckner 2017-06-23 01:01:36 +02:00
parent b30ca12731
commit 628133d2dd
1 changed files with 7 additions and 2 deletions
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9
src/emucore/tia/FrameManager.cxx
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@ -37,7 +37,8 @@ enum Metrics: uInt32 {
initialGarbageFrames = 10, initialGarbageFrames = 10,
framesForModeConfirmation = 5, framesForModeConfirmation = 5,
minStableFrames = 10, minStableFrames = 10,
maxStabilizationFrames = 20 maxStabilizationFrames = 20,
minDeltaForJitter = 3
}; };
static constexpr uInt32 static constexpr uInt32
@ -255,7 +256,11 @@ void FrameManager::finalizeFrame()
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - // - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
void FrameManager::handleJitter(Int32 scanlineDifference) void FrameManager::handleJitter(Int32 scanlineDifference)
{ {
if (scanlineDifference == 0 || !myJitterEnabled || myTotalFrames < Metrics::initialGarbageFrames) return; if (
abs(scanlineDifference) < minDeltaForJitter ||
!myJitterEnabled ||
myTotalFrames < Metrics::initialGarbageFrames
) return;
myVblankManager.setJitter(scanlineDifference); myVblankManager.setJitter(scanlineDifference);
} }